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This paper applies techniques of containerless processing,drop tube and glass fluxing,to undercool and solidify Ni77P23 alloys.Different diameter spheres were collected at the bottom of a 52-m long drop tube.Both crystalline and amorphous phase were formed in various size specimens due to the different cooling rate.The variation of partial undercooling with bulk undercooling is calculated for the Ni77P23 alloys.The deep undercooling and rapid solidification behaviour of Ni77P23 melts has been analysed with respect to microstructure formation and transition during fluxing and 52-m drop process of undercooled melts.
This paper applies techniques of containerless processing, drop tube and glass fluxing, to undercool and solidify Ni77P23 alloys. Different diameter spheres were collected at the bottom of a 52-m long drop tube. to the different cooling rate. The variation of partial undercooling with bulk undercooling is calculated for the Ni77P23 alloys. The deep undercooling and rapid solidification behavior of Ni77P23 melts has been analyzed with respect to microstructure formation and transition during fluxing and 52-m drop process of undercooled melts.